U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 252/519.13 - Bismuth, ruthenium, or iridium containing


Subclass of Class 252 - Compositions
Definition: Compositions wherein the chemical formula has bismuth, ruthenium,
No. of patents: 118
Last issue date: 06/07/2011


    3  
NumberTitleIssue Date
5057488Synthesis of Bi-Pb-Ca-Sr-Cu-O superconductive material
A reactant particulate mixture comprised of Bi2 CaSr2 Cu2 O8&#b1;x where x ranges from 0 to 0.5, Ca2 CuO3, cupric oxide and lead oxide is formulated and reacted to produce superconductive B...
10/15/1991
5057486Synthesis of Bi-Pb-Ca-Sr-Cu-O oriented polycrystal superconductor
A particulate mixture comprised of Bi2 CaSr2 Cu2 O8&#b1;x where x ranges from 0 to 0.5, Ca2 CuO3, cupric oxide and lead oxide, wherein the Bi2 CaSr2 Cu2 O
10/15/1991
5051204Multi-element metal chalocogenide
A novel, multi-element metal chalcogenide is disclosed which has the following general formula (I): X.sub.(1-a)x X'ax Yy Zz (I) wherein X stands for at least one element selected from Bi, Sb and As, X1
09/24/1991
4959347Forming homogeneous precursers of Bi-Sr-Ca-Cu via carboxylates in the presence of oxidizing agents
A process for producing a superconductor of an oxide system, which comprises uniformly dissolving, dispersing or suspending in a solvent metal elements for constituting the oxide system at least partly in the form of carboxylates with the rest, if any, be...
09/25/1990
4933317Bismuth oxide superconductors, and devices and systems comprising such a superconductor
A new class of Bi-based superconductive oxides is disclosed. As do the previously known Bi-based superconductors, the novel materials have a perovskite-like crystal structure. However, in contradistinction to the prior art materials, the inventive materia...
06/12/1990
4906406Thermistor composition
The invention is directed to a thick film thermistor composition consisting of finely divided particles of (a) a ruthenium-based pyrochlore, and (b) a short borosilicate glass or glass mixture, both dispersed in (c) an organic medium....
03/06/1990
4880771Bismuth-lead-strontium-calcium-cuprate superconductors
Novel superconductive Pb-substituted oxides are disclosed. The oxides all have layered perovskite-like crystal structure, and manifest superconductivity (R=o) above about 77K. The materials are described by the nominal formula X2+x M3-x
11/14/1989
4843059Superconductive mixed valence copper oxide, and method of making it
A superconducting mixed valence copper oxide, having a formula of the type: where: 0ࣘx
06/27/1989
4814107Nitrogen fireable resistor compositions
A nitrogen fireable resistor composition comprising: a. a conductive phase containing (1) a perovskite of the form A'1-x A"x B'1-y B"y O3, wherein when A' is Sr; A" is one or more of Ba, La, Y, Ca and Na, ...
03/21/1989
4784717Method of manufacturing BaPb1
A method of manufacturing BaPb1-x Bix O3 single crystal wherein the BaPb1-x Bix O3 single crystal is grown by hydrothermal synthesis which applies heat and pressure to a nutrient composed o...
11/15/1988
4731153Method to manufacture BaPb1-x BIx O3 single crystal
The present invention is the method of manufacturing BaPb1-x Bix O3 single crystal utilized as a super-conductor. In this method, the starting material and the growing substrate are mounted inside an autoclave, in which an...
03/15/1988
4678732Method for manufacture of photo-semiconductor
A photo-semiconductor is produced by melting Bi2 O3 or its mixture with a small amount of an oxide or fluoride and then quenching the resultant melt in the form of a film....
07/07/1987
4636332Thick film conductor composition
Thick film conductor compositions comprising an admixture of finely divided particles of A. noble metal, noble metal alloy or mixtures thereof, and B. inorganic binder comprising a glass corresponding to the formula Bi4 Si3-x Gex
01/13/1987
4539223Thick film resistor compositions
Resistor composition comprising an admixture of finely divided particles of (a) ruthenium-based conductive material, (b) inorganic binder and (c) cobalt ruthenate....
09/03/1985
4536328Electrical resistance compositions and methods of making the same
A composition for making electrical resistance elements including a conductive component which comprises (a) a precious metal oxide of the formula A'1-x A"x B'1-y B"y O3, wherein when A' is Sr; A" is one o...
08/20/1985
4499011Resistance paste for a resistor body
A resistance paste for the manufacture of a resistor body, for example, by silk-screening and the resistance body manufactured herewith, which paste comprises a mixture of Pb2 Rhx Ru2-x O7-y, a permanent binder ...
02/12/1985
4476039Stain-resistant ruthenium oxide-based resistors
Stain-free printable thick film resistor compositions comprising finely divided particles of (a) ruthenium oxide-based compound, (b) a thermally decomposable oxygen-containing compound of a nonalkali metal and (c) inorganic binder, all dispersed in (d) an...
10/09/1984
4440670Method of synthesizing high surface area unagglomerated noble metal pyrochlore compounds
A method of preparing electrically conductive pyrochlore compounds of high surface area and unagglomerated form, having the formula is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures t...
04/03/1984
4420422Method for making high surface area bismuth-containing pyrochlores
Method for making a pyrochlore of the formula Bi2-x Mx B2 O7-z by firing finely divided particles of bismuth oxycarbonate. The pyrochlores made by the invention have a high surface area and are especially useful...
12/13/1983
4362656Thick film resistor compositions
Resistor composition comprising an admixture of finely divided particles of (a) ruthenium-based conductive material, (b) inorganic binder and (c) a manganese vanadate compound....
12/07/1982
4341612Electrolytic cell
An electrolytic cell comprises two or more units wherein each unit comprises a gas and liquid permeable anode is closely brought into contact with one surface of a cation exchange membrane and a gas and liquid permeable cathode which is closely brought in...
07/27/1982
4318830Thick film conductors having improved aged adhesion
Thick film conductors for hybrid microelectronic applications, having improved aged adhesion on various substrates such as 96% Al2 O3 and BeO, are provided. The improved aged adhesion at the solder joints is a result of the incorpora...
03/09/1982
4303742Resistance material
Resistance material comprising a mixture of metal oxidic compounds, metal oxides, a permanent binder and a temporary binder, the resistance-determining component consisting of at least one component having the formula Mx Sr1-x Rh
12/01/1981
4301042Resistance material
A resistance material comprising a mixture of a permanent binder, a temporary binder and a bismuth-strontium rhodate having a composition defined by the formula Bix Sr1-x Rh2.5 O5-5.5 wherein 1/2>x>O as a resist...
11/17/1981
4225469Method of making lead and bismuth pyrochlore compounds using an alkaline medium and at least one solid reactant source
A method of preparing electrically conductive pyrochlore compounds having the formula: is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof, Oࣘxࣘ1.0 and 0ࣘyࣘ1. The m...
09/30/1980
4203871Method of making lead and bismuth ruthenate and iridate pyrochlore compounds
A liquid solution method of preparing electrically conductive pyrochlore compounds having the formula: is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof, 0ࣘ×ࣘ1.0 and...
05/20/1980
4192780Method of making lead-rich and bismuth-rich pyrochlore compounds using an alkaline medium and a reaction enhancing anodic potential
A liquid solution method of preparing electrically conductive pyrochlore compounds of high surface area, having the formula: is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof,...
03/11/1980
4176094Method of making stoichiometric lead and bismuth pyrochlore compounds using an alkaline medium
A liquid solution method of preparing electrically conductive pyrochlore compounds having the formula: is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof, and 0ࣘyࣘ1. T...
11/27/1979
4163706Bi2 [M2-x Bix ]O7-y compounds wherein M is Ru, Ir or mixtures thereof, and electrochemical devices containing same (Bat-24)
Novel bismuth-rich pyrochlore-type compounds are described having the formula: wherein M is selected from the group consisting of Ru, Ir and mixtures thereof and wherein x is greater than zero and less than or equal to about 1.0 and y is greater than or e...
08/07/1979
4129525Method of making lead-rich and bismuth-rich pyrochlore compounds using an alkaline medium
A liquid solution method of preparing electrically conductive pyrochlore compounds of high surface area, having the formula: is disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof,...
12/12/1978
4124539Pb2 [M2-x Pbx ]O7-y compounds wherein M is Ru, Ir or mixtures thereof, and method of preparation
Novel lead-rich pyrochlore type compounds are described having the formula: wherein M is selected from the group consisting of Ru, Ir and mixtures thereof and wherein x is greater than 0 and less than or equal to about 1.2 and y is greater than or equal to 0 a...
11/07/1978
4028277Voltage-dependent resistor
A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi2 O3), titanium oxide (TiO2) and one or two members selected from the group ...
06/07/1977
4003855Nonlinear resistor material and method of manufacture
The zinc oxide grain size and breakdown voltage characteristics of polycrystalline zinc oxide varistors may be controlled by adjusting sintering times and temperatures. Varistor ceramics formed by sintering constituent metal oxides for long periods are fo...
01/18/1977
3974107Resistors and compositions therefor
Powder compositions for producing high resistivity resistors capable of withstanding high voltage surges without large changes in resistivity, said compositions comprising finely divided pyrochlore-related oxides, lead glasses and metal titanates. Alterna...
08/10/1976
3960778Pyrochlore-based thermistors
Powder compositions comprising finely divided solid solutions of certain pyrochlore-related oxides and glass powder, and thermistors thereof, useful in the electronics art....
06/01/1976
3932315Superconductive barium-lead-bismuth oxides
Compositions of the formula Ba1.sub.-x Ax Pb1.sub.-y Biy O3 where A is Na, K, Rb, Cs, Sr or Pb, x is 0 to about 0.5, y is about 0.05-0.3, with the proviso that x ࣘ y when A is Na, K, Rb or Cs Are superconduct...
01/13/1976
    3  
 
Sign InRegister
Username  
Password   
forgot password?